Integrating reCAPTCHA by Google with Citrix ADC is a great move towards protecting internal resources from attackers. If someone or even a bot of computers are trying to brute force an account, or break in to your system, having reCAPTCHA is sure to defer such activies and make it a very difficult task to achieve.
netscaler
Authentication to NetScaler using AD FS 4.0 on Server 2016, Citrix FAS and Azure MFA in Azure Cloud
An increasing number of organisations are turning to Azure MFA to protect public and private cloud resources from intrusion by challenging users with multi-factor authentication. Azure MFA is a powerful, flexible authentication module that is either hosted in Azure Cloud itself or as an on-premises installation.
Citrix Fixes and Known Issues – NetScaler Management and Analytics System / Citrix Application Delivery Management
A list containing the majority of Citrix Application Delivery Management (formerly NetScaler Management and Analytics System) support articles collated to make this page a one stop place for you to search for and find information regarding any issues you have with the product and its related dependencies.
NetScaler native OTP
Native one time password using Citrix NetScaler is a new feature released in version 12.0 build 51.24. Using the native OTP capabilities of NetScaler reduces the need to purchase third party authentication systems when you want to protect your resources with multiple factors of authentication. Alternatively you could use OTP for certain users and the remaining users receive a different OTP solution that has extra functionality such as push-notifications.
Single sign-on to Office 365 using NetScaler SAML and nFactor authentication with Azure MFA
The following post describes how to configure SAML authentication with NetScaler as the IdP (Identity Provider) and Microsoft Office 365 as the SP (Service Provider). Going above just using SAML, a mixture of Azure Multi-Factor Authentication, User Certificates, LDAP and Negotiate authentication policies are used for authentication from external and internal locations.